CVE-2010-4247
The do_block_io_op function in (1) drivers/xen/blkback/blkback.c and (2) drivers/xen/blktap/blktap.c in Xen before 3.4.0 for the Linux kernel 2.6.18, and possibly other versions, allows guest OS users to cause a denial of service (infinite loop and CPU…
Does this matter?
Lower severity and a low EPSS score (0.73%). Track it; it rarely justifies an emergency change on its own.
Description
The do_block_io_op function in (1) drivers/xen/blkback/blkback.c and (2) drivers/xen/blktap/blktap.c in Xen before 3.4.0 for the Linux kernel 2.6.18, and possibly other versions, allows guest OS users to cause a denial of service (infinite loop and CPU consumption) via a large production request index to the blkback or blktap back-end drivers. NOTE: some of these details are obtained from third party information.
- CVSS 2.0
- 5.5 MEDIUMAV:A/AC:L/Au:S/C:N/I:N/A:C
- EPSS
- 0.73% probability · 54th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- citrix/xen
- Source
- secalert@redhat.com
EPSS 0.7% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://secunia.com/advisories/35093Vendor Advisory
- http://secunia.com/advisories/42789
- http://secunia.com/advisories/46397
- http://www.openwall.com/lists/oss-security/2010/11/23/1Patch
- http://www.openwall.com/lists/oss-security/2010/11/24/8Patch
- http://www.redhat.com/support/errata/RHSA-2011-0004.html
- http://www.securityfocus.com/archive/1/520102/100/0/threaded
- http://www.securityfocus.com/bid/45029
- http://www.vmware.com/security/advisories/VMSA-2011-0012.html
- http://www.vupen.com/english/advisories/2011/0024
- http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/7070d34f251cPatch
- http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/77f831cbb91dPatch
- https://bugzilla.redhat.com/show_bug.cgi?id=656206Patch
- http://secunia.com/advisories/35093Vendor Advisory
- http://secunia.com/advisories/42789
- http://secunia.com/advisories/46397
- http://www.openwall.com/lists/oss-security/2010/11/23/1Patch
- http://www.openwall.com/lists/oss-security/2010/11/24/8Patch
- http://www.redhat.com/support/errata/RHSA-2011-0004.html
- http://www.securityfocus.com/archive/1/520102/100/0/threaded
- http://www.securityfocus.com/bid/45029
- http://www.vmware.com/security/advisories/VMSA-2011-0012.html
- http://www.vupen.com/english/advisories/2011/0024
- http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/7070d34f251cPatch
- http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/77f831cbb91dPatch
- https://bugzilla.redhat.com/show_bug.cgi?id=656206Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.